Trolley-head.



N0 MODEL.

v PATENTED JULY:19, 1904. s. BOURG-E 0I.S.. TROLLEY HEAD.

- APPLIOATION FILED 00124. 1903.

UNITED STATES Patented July 19, 1904.

PATENT OFFICE.

TROLLEY-HEAD.

SPECIFICATION forming part of Letters Patent No. 765,544, dated July 19, 1904.

Application filed October 24, 1903. Serial No. 178,393. (No model.) I

To all whmn it may concern.-

Be it known that I, STANISLAS BOURGEOIS, a citizen of the United States, residing at Manchester, in the county of Hillsboro and State of New Hampshire, have invented a new and useful Trolley-Head, of which the following is a specification. I

This invention relates to a novel trolley by means of which electrical contact is maintained between a feed-wire and an electricallypropelled vehicle.

The object of the invention is to simplify and improve the construction disclosed in my Patent No. 657,637, dated September 11, 1900, by eliminating certain features thereof and by adding certain others, including means for holding the bearing disks or collars against rotation and means for attaching the compression-springs thereto.

A further object of the invention is to provide the trolley-head with a novel guard arranged to prevent the trolley-wheel from being drawn down into engagement with the upper side of the feed-wire when the trolley-pole comes into contact with a .guy-wire after the trolley has jumped the feed-wire.

To the accomplishment of these objects and others subordinate thereto the preferred embodiment of the invention embraces that construction and arrangement to be hereinafter described, illustrated in the accompanying drawings, and succinctly defined in the appended claims.

In said drawings, Figure 1 is a side elevation of the trolley-head and trolley. Fig. 2 is a plan view thereof. Fig. 3 is a sectional View, and Fig. iis a rear elevation.

Like numerals of reference are employed to designate corresponding parts in the several views.

1 indicates a trolley head or harp having a stem 2 received within the upper end of the trolley-pole and carrying between its arms 3 and 4 a short shaft 5, upon which is mounted the trolley proper or trolley-wheel 6. The

shaft 5 is retained in any suitable manner, preferably by cotter-keys 7, and the ends of the shaft are provided with diametrical toolreceiving slots 8 to facilitate the turning of the shaft to proper position to permit the insertion of the keys.

In order to permit independent lateral movement of the trolley wheel to accommodate lateral deflections in the feed-Wire in a manner explained in my patent above identified, said wheel is loosely mounted on the shaft 5 and is centered between a pair of bearing-collars 9, urged against the opposite sides of the wheel bysprings 10, encircling the sh aft 5 and having their outer ends received in spring-seats 11,

' formed in the inner faces of the arms 3 and 4.

I have found in practice that it is desirable to attach the springs 10 to the bearing-collars 9, and in order to effect this attachment without necessity for the employment of separate securing devices I provide the collars with peripherally-grooved hubs 12, within the grooves of which the inner ends of the springs 9 are coiled. It has also been found desirable to retain the collars against rotation withthe trolley-wheehand in order to do this without interfering with the movement of the collars under the impulse of the springs the said collars are provided with laterally-disposed stoppins 13, slidably received within pin-sockets 1 1, formed in the outer ends of the harp-arms 3 and 4:. It will now be obvious that the trolleywheel 6 may be normally centered within the harp by the collars 9, urged in opposite directions by the springs 10, which springs will yield to permit such lateral movement of the trolley-Wheel within the harp as is necessary to accommodate slight lateral deflections or turnouts of the feed-wire.

An additional feature of the present invention embraces means for protecting guys and span-wires, as well as the trolley-head, from derangement. It is well understood by those skilled in the art that when a trolley leaves the wire the pole-elevating springs will effect the elevation ofthe trolley-wheel some little distance above the wire before the upward movement of the pole is arrested. It frequently happens that when the pole has left the feed-wire the impetus of the car, particularly on downgrades, will bring the trolleypole into contact with a span or guy wire, which, in order to permit the passage of the trolley thereunder, must depress the upper end of the trolley-pole. If, however, this depression of the pole draws down the trolleywheel into contact with the feed-wire, it is impossible for the trolley to clear the guywire, and the consequence is that either the guy, thefeed-wire, or the trolley-head must yield, one or the other of these parts being therefore necessarily deranged. Usually the guy-wire presents the least resistance and is torn from place. To eliminate the possibility of derangement from this cause, I provide a substantially U-shaped guard 15, straddling the under side of the trolley-wheel and having its upper ends attached to or integral with the outer or upper ends of the yoke-arms 3 aud t. This guard will be seen to depend from and be disposed transversely of the harp, and it is evident that when the trolley is drawn down to a position above the feed-wire the guard will contact With the wire and will deflect the trolley-head laterally, thus preventing the wheel from engaging the upper side of the wire and avoiding the possible derangement of the parts.

It is thought that from the foregoing the construction, operation, and advantages of my improved trolley Will be apparent; but, while the present embodiment of the invention appears at this time to be preferable, I desire to reserve the right to effect such changes, modifications, and variations of the illustrated structure as may be embraced within the scope of the protection prayed.

- What I claim is 1. The combination with a trolley-harp and a trolley-wheel mounted therein, of a U- shaped guard rigidly connected at its opposite ends to the outer ends of the harp-arms and straddling the under side of the wheel,

the curved under face of the guard being entirely unobstructed to prevent said guard from catching on the wire when drawn down from a position above the same. a

2. The combination with atrolley-head, a wheel therein, and a shaft supporting the wheel; of spring-urged bearing-collars disposed at opposite sides of the wheel, stoppins extending laterally from the collars, and sockets formed in the opposite sides of the head and slidably receiving said pins.

3. The combination with a head, a wheel mounted therein, and a shaft supporting the wheel; of bearing-collars disposed at opposite sides of the wheel and provided with peripherally-grooved hubs, spiral springs encircling the shaft and having their proximate ends received in the grooves of the hubs, and means for preventing rotation of the collars while permitting lateral movement thereof.

4:. The combination with a trolley head having side arms formed with spring-seats and pin-sockets, a shaft extending between the arms, and a trolley-wheel mounted on the shaft and movable longitudinally thereof; of bearing-collars opposed to the opposite sides of the wheel and provided with peripherallygrooved hubs and laterally-extending stoppins, said pins being slidably received by the pin-sockets in the arms, and springs encircling the shaft and having their opposite ends received in the spring sockets and in the grooves of the collar-hubs.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

STANISLAS BOURGEOIS.

Witnesses:

WILLIAM J. STARR, SHERMAN E. BURROUGHS. 

